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All foreign immigrants arriving in Mandos, should notify the 
Sanitary Department their place of residence, occupation or 
trade, and to each one should be delivered a copy of the by-laws 
relating to screening of fever cases. 
The foreigners of the business class are accustomed to call in a 
doctor at once, as they realise the seriousness of yellow fever and the 
benefit derived from early treatment. The regulations would not 
inconvenience them, but they and their doctors would be compelled to 
send early notification of ‘ fever ’ cases, and the diagnosis made to 
the responsible authorities. 
The classes that would benefit by the regulations would be the 
foreign labouring classes: the very ones who by their ignorance of 
the danger from the Stegomyia mosquito and the non-screening of 
‘fever’ cases, greatly assist in the continuance of yellow fever in 
Manaos. 
We believe that after a few sharp fines had been administered a 
salutary lesson would have been learnt and the screening of all fever 
cases would be performed as a matter of course, even in houses where, 
under normal conditions, the use of mosquito nets was not universal. 
A further advantage would be that cases of malaria in the gametocyte 
stage would be protected from infecting the Anophelines. 
In reality there would be very little hardship from such ordinance, 
as the majority of the Brazilian and foreign residents use mosquito 
nets. They are accustomed to use the net only during the night. 
Hence the law would compel the sick to be screened day and night. 
For the very poor residents who have not the money to afford a net 
the hospitals are the proper place. 
We admit that the difficulties will be great, but only for a time. 
After a short period all the inhabitants, including the labouring-class 
foreigner, would become aware of the fact that non-compliance with 
the screening regulation entailed an immediate fine. Secondly, the 
non-immune would learn that the more the cases of fever remained 
unscreened, the greater would be the number of yellow fever cases, 
and for his own protection he would compel the ‘ fever ’ sick to use a 
net. Man is of a selfish nature, and the desire to live is predominant 
in every normal person. Let the lower classes learn to fear yellow 
fever, teach them the ways to avoid the disease, and one of the main 
difficulties will have been overcome. 
